OPC UA Connection to AB SLC 5/04 through Digi One IAP Serial Server

[larry.thigpen]

The Rslinx config is:
(The Digi One creates a virtual com port via the ethernet connection
AB DF1 - DH485
Com 5
It assigns it Node 1

this post on the forum seems to indicate it will work:

DIGI One IAP

I have one of these successfully connected to a SLC5/03. I can communiate fine through RsLinx but can not connect via OPC UA. I have it set up as an SLC. The status toggles between ‘Disconnected’ and ‘Connecting’. I essentially have it set up with the standard Allen Bradley configuration (port 2222). Are there any specifics that need to be changed in the IAP’s setup? Thanks